Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual distrito é o atual elmer j. holland?
 ###Tabelas: CREATE TABLE winners_of_the_barbaro_stakes_since_1993 (winners_of_the_barbaro_stakes_since_1993_id AUTO_INCREMENT PRIMARY KEY, Year VARCHAR, Winner VARCHAR, Jockey VARCHAR, Trainer VARCHAR, Owner VARCHAR, Distance VARCHAR, Time VARCHAR, Purse VARCHAR) CREATE TABLE  (_id AUTO_INCREMENT PRIMARY KEY, District VARCHAR, Incumbent VARCHAR, Party VARCHAR, First elected INT, Result VARCHAR, Candidates VARCHAR) CREATE TABLE short_tournaments (short_tournaments_id AUTO_INCREMENT PRIMARY KEY, Year VARCHAR, Position INT, Games played INT, Won INT, Tied INT, Lost INT, Goals Scored INT, Goals Against INT, Points INT, Postseason place VARCHAR) CREATE TABLE list_of_imperial_vicars_1437-1792 (list_of_imperial_vicars_1437-1792_id AUTO_INCREMENT PRIMARY KEY, Interregnum began VARCHAR, Interregnum ended VARCHAR, Duration VARCHAR, Count Palatine of Saxony VARCHAR, Count Palatine of the Rhine VARCHAR) CREATE TABLE largest_margin_of_runs_victory (largest_margin_of_runs_victory_id AUTO_INCREMENT PRIMARY KEY, Score VARCHAR, Opposition VARCHAR, Venue VARCHAR, City VARCHAR, Year INT)  
SELECT District FROM  WHERE Incumbent = Elmer J. Holland